Sony WatchCorder EVT-820 User manual

Before operating the unit, please read this manual thoroughly
and retain it for future reference.
Mode demploi page 20
Avant ia mise en service de cet appareil, priére de lire
attentivement ce mode d'emploi que l'on conservera pour toute
référence ultérieure.
TILE COPY
PROPERTY
OF
THE
WatchCorder
Man.
THERMAL
DET
©1989 by Sony Corporation

The model and serial number of your set are located on the
rear. Record the serial number in the space provided below.
Refer to these numbers whenever you call upon your Sony
dealer regarding this product.
Model No. EVT-820 Serial No.
CAUTION
The format used in the time lapse recorder EVT-820
differs from the regular 8 mm video format. This unit
cannot be used to play 8 mm video cassettes. However,
cassettes recorded on this unit may be viewed on a
normal 8 mm video cassette recorder.
To prevent fire or shock hazard, do not ex-
pose the unit to rain or moisture.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,
DO NOT REMOVE COVER (OR BACK).
NO USER-SERVICEABLE PARTS INSIDE
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
This symbol is intended to alert the
user to the presence of uninsulated
“dangerous voltage” within the prod-
uct's enclosure that may be of suffi-
cient magnitude to constitute a risk of
electric shock to persons.
This symbol is intended to alert the
user to the presence of important
operating and maintenance (servicing)
instructions in the literature accompa-
nying the appliance.
WARNING
This equipment generates, uses, and can radiate radio
frequency energy and if not installed and used in accordance
with the instructions manual, may cause interference to
radio communications. It has been tested and found to
comply with the limits for Class A computing devices
pursuant to Subpart J of Part 15 of FCC Rules, which are
designed to provide reasonable protection against such
interference when operated in a commercial environment.
Operation of this equipment in a residential area is likely to
cause interference in which case the user at his own
expense will be required to take whatever measures may be
required to correct the interference.
For the customers in Canada
This apparatus complies with the Class A limits for radio
noise emissions set out in Radio Interference Regulations.

| ‘Table of Contents
OUTING ss ak chee eg wees dated abe adenced cats Sravenatle cl deavedeeaeeuh ly cae ed AP earn Salo. g BR teers 4
PIECAUNONS: ai. 0, oars eee EG Shee ns Govehstonts Sheree oaks ies Serie yee slg Renee 5
Location and function of controls . 0... cee nee e nee eens 6
Preparation
GOMMOCHIONS 0.5. eve owtss as dance shecoeens otter sisi Boole Dicnedha igh dudvoustelalatsl gid EAB slays dee aheuierae sage sae 10
Setting the date and time ........ 0... cence eens 12
Inserting the cassettes ..o is sea ascites Shadale ie, eb ace 08 Rise wees 8 FS4 Va ARES 14
Selecting the recording time ... 0.0... ec eee ee eee eee 15
Operation
FROCOMDIN ieee 3d store ects a ern o sree es cawcae ee Darl eet tecae fale teed graeme veto ea eee 16
REC LOCK 1Unclion:. «6... ddssas tities isd CN e ee eed Supe ese Se ee 17
Repeated recording on the same cassette ......... 0.0... cee eee eee eee 17
Automatic recording restart after a power interruption... ............... 020 cee ee 17
Alarm -FeCOrding): <2 tise vincias tol Bad Vdd sheave cele cade dite had daveb Saiee Bw add 24 18
Alarm sensor connection. ........ 0... c eee ee eee eee e eee eee nes 18
Selecting the alarm recording period ... 2... cc eee eens 18
Displaying the alarm list 2.0... kc cee eee ete eee eens 20
Searching the picture when the alarm function worked. .............. 00-00 c eee 20
THMEr. PECOMGING: f o34 Sie Seed wee eee ROE ae Kee 2 oh tee See Mavee Sele tale eles 21
Using the internal timer... ee Sk care eee eee acne ees eee 21
Using the-externalitimen << siscosen sees Detar gets Sage enti turn sad he Sed 24
Playbackss 6.00 4 hinshctdee eaten oor shane ds Pena Mate olen ate ae 25
Various playback fUNCtIONS ...... 0... . cet eee e eee teens 26
Maintenances, s:i..22.6.c00804 okt Reed seg cocina nee baa e ne Sea ae see eae 27
Specifications: vce au Oe hee eee ee KG ae oe eee Ew EE Ga a ew Re ewe SR EER S 28
TPSUIDIGSNGOUGE sk ode Sie eh ee oe ole eure ead eed eed chara) 29

Frame still picture with
high resolution
The frame still picture doubles vertical resolution in comparison to the field still
picture.
* Horizontal resolution is improved to more than 380 lines in black-and-white mode and
more than 260 lines in color mode.
Six time lapse modes
The time lapse intervals for recording can be set in six steps, from 1 frame per 0.25
seconds to 1 frame per 16 seconds. At the longest interval setting, available recording
time is a full 760 hours (about 31 days) with one 90-minute tape.
Field still picture with digital
memory
For clear and unblurred viewing of fast-moving objects, single fields stored in digital
memory can be displayed.
Versatile recording
functions
¢ Alarm recording — Automatic recording at shortest time mode setting when alarm
sensor is activated.
© Timer recording — Two kinds of timer recording
Internal timer recording: Automatic recording at the desired time on the desired days of
the week. Up to three programs can be preset for one week.
External timer recording: Automatic start of recording when power is supplied from an
external timer.
* Repeat recording — Automatic rewind at tape end, and recording restart at tape
beginning.
Alarm recall and alarm
search function
Up to 10 alarm recordings can be listed and the alarm date, time and current time are
shown (“Alarm recall’). A still picture can be also obtained at the alarm recording portion
(‘Alarm search’).
Time/date generator
Time and date information, which is invaluable for surveillance and monitoring purposes,
can be recorded together with the picture.
Informative display with
tape counter
The recording condition and other settings can be checked at a glance on the easy-to-
read display. The REC indicator flashes in the same interval as the selected time mode,
and the ALARM indicator alerts of any alarm sensor operation.
Power failure backup
and automatic recording
restart
Time and date settings are retained for up to 72 hours even in the case of a power
interruption. During recording, when power is restored, recording automatically continues
in the previously selected mode.
REC LOCK function
To guard against operation errors, the record mode can be locked, so that recording
is not interrupted even if a button is accidentally pressed.

On safety
© Operate the unit only on 120V AC, 50/60 Hz.
* Should any solid object or liquid fall the cabinet, unpiug the unit and have it checked
by qualified personnel before operating it any further.
* Unplug the unit from the wall outlet if it is not to be used for an extended period of
time. To disconnect the cord, pull it out by the plug. Never pull the cord itself.
On installation
© Allow adequate air circulation to prevent internal heat build-up. Do not place the unit on
surfaces (rugs, blankets, etc.) or near materials (curtains, draperies) that may block the
ventilation slots.
* Do not install the unit near heat sources such as radiators or air ducts or in a place
subject to direct sunlight, excessive dust, mechanical vibration or shock.
¢ The unit is designed for operation in a horizontal position. Do not install it in an
inclined position.
¢ Keep the unit and cassette tapes away from equipment with strong magnets, such as a
microwave oven or a large loudspeaker.
© Do not place any heavy object (more than 13 kg, 28 Ibs) on the unit.
On operation
© When the unit is not in use, turn the power off to conserve energy and to extend its
useful life.
© Remove and store video cassettes after recording or playback.
On cleaning
Clean the cabinet, panel and controls with a dry soft cloth, or a soft cloth lightly
moistened with a mild detergent solution. Do not use any type of solvent, such as
alcohol or benzine, which might damage the finish.
On repacking
Do not throw away the carton and packing materials. They make an ideal container in
which to transport the unit. When shipping the unit to another location, repack it as
illustrated on the carton.
On cassette care
Store cassettes in their cases and keep them in an upright position to prevent intrusion
of dust and uneven winding.
If you have any questions about this unit, contact your Sony dealer.

Front Panel and Top Cover
i i ec POWER switch and indicator
EJECT indicator
Lights up while a cassette is being
| ejected.
Cassette holder
Tape
operation
buttons
ALARM
RECALL
button
Press to display the date and time
when the alarm function worked.
Up to 10 alarms are displayed.
When the alarm function worked
11 times or more (up to 99), only
the count number is displayed.
STOP/EJECT @/ button
REC @ (record) button
To start recording, press this button and the » button.
REW <a/@) (rewind) button
Pressing the button during playback permits review
(rewind while viewing the picture).
ALARM SEARCH button
Press this button in the stop
mode, and then the « or » button
to search the portion of the alarm
recording. The unit is set in the
still mode at the portion of the
alarm recording.
REV < (reverse) button
FWD e (forward) button
FF e»/e> (fast-forward) button
Pressing the button during playback permits cueing
(fast-forward while viewing the picture).
STILL/FRAME <u button
Press the button once to view a still picture. Each
subsequent push then switches the picture back by
one frame. If the field mode was chosen with the
FRAME/FIELD button, the picture moves by one field.
FRAME/FIELD button
Serves to select the still picture
playback mode.
Each push cycles the setting
through Field 1, Field 2, and
STILL/FRAME 11» button Frame.
Press the button once to view a still picture. Each
subsequent push then advances the picture by one
frame. If the field mode was chosen with the
FRAME/FIELD button, the picture moves by one field.
6
COUNTER RESET button

PB SPEED switch
Toggles the unit between regular playback
speed and the speed shown by the TIME MODE
indicator.
TIMER REC (recording) switch
INT: to start or stop recording at the time
preset with this unit
EXT: to start or stop recording at the time
preset with the connected timer
OFF: when the timer function is not in use
TIME MODE button
Selects the recording time mode (interval
setting).
Each push cycles the setting through 12 H,
24 H, 48 H, 96 H, 192 H, 760 H.
SET, ADJUST buttons
Serve to set the date and time.
Time date generator selector:
T.D. (time/date) SET: to set the time and date
T.D. (time/date) POSITION: to change the
position of the time and date
TIMER SET: to set the built-in timer
REPEAT REC (recording) switch
Set to ON to use the same cassette for
repeated recording. At the tape end, the
cassette is automatically rewound and
recording restart from the beginning.
Only if the alarm sensor was activated,
the tape stops at the tape end.
REC (recording) LOCK switch
When set to ON, all front-panel buttons
are inoperative after recording is started.
This serves to prevent operation errors.
(aon) |
PRL ISFIeye°

Display Panel
TIMER REC indicator
Recording mode indicator
The indicator lights up during recording
and flashes in the same interval as the
selected time mode.
|
| Time mode indicator
| Shows the recording time
j
when P6-90 tape is used.
Still picture mode
indicator
| [12H 24H 48H 96H 192H 760H} |
FRAME
FIELD 12)
SEARCH
ALARNM indicator
Lights up when the alarm sensor has
activated in alarm recording.
TAPE END indicator
Tape counter BF ete Sa
!
| Search mode indicator —~7

Rear Panel
eee
Ground terminal
Video mode switch
AUTO COLOR: Normally set to this position.
The unit is automatically set to the color mode
or black-and-white mode according to the
received signals.
B & W: When the S/N of the black-and-white
signal is not sufficient and the unit cannot be
switched to the black-and-white mode
automatically, set to this position.
~ -- EXT. TIMING OUT (external timing output)
connector (BNC connector)
Connect to the external timing in connector of the
switcher to switch the video cameras connected to
the switcher.
The video cameras are switched every one frame by
synchronization with the recording TIME MODE of this
unit.
Should you wish to switch the video cameras every
four frames, please consult your Suny dealer.
~ VIDEO IN connector (BNC connector)
Connect to the video output of the video camera.
VIDEO OUT connector (BNC connector)
Connect to the video input of the monitor. During
recording and standby, the signal from the VIDEO IN
connector is routed straight to the output. During
playback, the signal from the tape is supplied.
HEAD HOURS meter
Indicates accumulated time of head drum rotation to
provide a reference for maintenance.
SERIES REC (recording) terminals
Connect another EVT-820 recorder. After the recording
is filled on the cassette of this unit, the recording is
continued on the cassette of another recorder.
-~- =~ Power cord
Ground terminal
For SERIES REC connection or alarm sensor
connection, use this terminal.
ALARM OUT (alarm recovery output) terminal
During alarm recording, a voltage of +5 V is applied to
the connected equipment.
- ALARM IN terminal
Connect an alarm sensor.
ALARM REC (recording) PERIOD selector
MAN Alarm recording continues for as long as
(manual) | the alarm sensor is ON.
2 MIN Alarm recording continues for 2 minutes
after the alarm sensor was activated.
10 SEC Alarm recording continues for 10 seconds
j i
oak after alarm sensor was activated. |

Preparation
eal to AC outlet i
to VIDEO IN to VIDEO OUT
to video input
to video output
Use of the BNC connector
—-O
<> H
Align pin with cutout, insert and i
turn right to lock. j
To remove, turn left and pull out. }
a
¥
Video camera 0 i
Monitor
For alarm sensor connection, refer to page 18.
For timer connection, refer to page 24.
10